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The old days and improving the Spectrum experience.I was reminded of this recently, by a thread about Mask... Back in the day, I used to have a DISCiPLE interface and had to make do with snapshots of…
... all the level data into the 128K's memory, so I did ... to load files without corrupting memory. After I got the hang ... ) as if it was in memory all along.
memory lane ;) ) -
Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…
... /> If so, what are the memory areas available for 16k and ... -
TASM, Z80 and Spec emusHi! Having some novice questions here regarding TASM and writing machine code for the Speccy emus... Now I have configured TASM into my EditPlus and…
... that is - not binary data). (I think? Or else ... EditPlus program converts the binary data to ASCII text).
memory after loading it...
... how to insert data to specific memory cells, i.e ... if I would like to code UDG data ... -
InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... byte b from the data bus. The memory at location 256 * ... put random bytes onto the data bus at random times, ... read an opcode from the data bus an execute that. ... random bytes onto the data bus means a random ... low byte of 'nnnn' from data bus.
* M3: 4 ... -
Strange layout of Spectrum video memoryHello, does anyone have an idea why the Spectrum's video memory has such a strange layout? I understand that a resolution of 256x192 is an easy mean…
... why the Spectrum's video memory has such a strange layout ... it easier to address video memory. I also understand that the ... ) are a compromise to limited memory. But where does the line ... -
Problem with RealSpec & Chuckie Egg 2 POKEI'm using RealSpec, and after loading Chuckie Egg 2 I press F9 and enter the infinite lives POKE (35453,0) but it doesn't work. I just die in the us…
... and enter the infinite lives POKE (35453,0) but it doesn ... . I've even put the POKE in a .POK file - I ... -
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... (4 kbytes
long) from memory.
Does anybody ... ) ; source of sprite in memory (sprite is stored in such ... , it doesnt take anything from memory
;but uses stored ... />
POP BC ;restoring data needed to draw next row ... -
4 Computer Buffs data transmissions on TVAnyone else remember these? They were transmitted after closedown to tie in with the 4 Computer Buffs TV programme on channel 4 back in the 80s. The …
... (BBC TV transmitted some computer data as well, but only for ... -
Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…
... IX,sprites ; Point to sprite data
LD B,TOTALSPRITES ; And ... moving 256 bytes forward in memory to FB0Ah
LD H ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... IX,sprites ; Point to sprite data
LD B,TOTALSPRITES ; And ... moving 256 bytes forward in memory to FB0Ah
LD H ... -
Character SetAlright, this may not be the right forum for this question (it does sort of relate to a game which I'm trying to get working properly - long story) -…
... the ROM?
Unless my memory is mixed up, there is ... the rom, but you could poke a different value in there ... -
what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…
... from port 7FFD for extra memory pging:
- for ... those bits for extra memory switching and if it ... / port DFFD for extra memory paging.
What is ... keep track of a memory bank number, by combining ... established port for extra memory, other than the Pentagon ... -
Smooth Masked Sprites using fast page flip on 48k Part 2Ok, After all the suggestions in Part 1, which were all excellent (Thankyou), I opted on the following: I have 2 x 6k Offscreen areas (Yes, that's …
... MOVING 256 BYTES FORWARD IN MEMORY TO FB0AH
LD H ... , aka Metalbrain
;GRAPHIC DATA:
;Pixel Size: ( 16, 24 ... -
Zecut0r and ZAFA while ago (about 2 yrs)i took VbSpec and tried to port it to Delphi 6. Althought it was pretty weak, it. Meanwhile DelphiSpec 0.1 appeared and i wa…
... the modern emus ( tzx ..debug..poke/peek etc ). So i started again ... -
Cobra - scrollingHi everyone, I have been studying some of the code in Ocean' Cobra game using a debugger, in the hope of improving my own scrolling routines. In cas…
... a backscreen, but stores the data in such a way that ... a table in memory somewhere which stores the background data, ie. the ... -
Once again about saving data in emulatorsI have already posted a topic asking how to save data in zx32. Now I have the same question concerning Real Spectrum emulator. I have already found o…
... topic asking how to save data in zx32. Now I have ... -
Including data at compile time in C?Does anyone know how to write a C program (preferably using DJGPP) in which a large block of data is incorporated directly into the executable at com…
... which a large block of data is incorporated directly into the ... -
[CRL] Formula One ModI've seen the odd person ask for a Formula One name editor from time to time*** and, as it's an ol' fave, thought I'd add one as I can never find the…
... :/ This can be corrected with Poke $FF08,$4E (65288,78)
data. This has nothing to do ... -
New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... converted into line 0 with POKE 23756,0). The more complicated ... /> DEF FN P(a)=PEEK a+256*PEEK (a+1)
[/code ... /> DEF FN T()=(1 AND PEEK (1+FN P(23639))=34 ... )+(2 AND PEEK (FN P(23639))>13 ... AND PEEK (1+FN P(23639))> ... -
Idea for a new feature to compliment a debugger in an emulatorI had an idea for an emulator feature yesterday. Don't recall having seen this idea before, but I'm sure you'll correct me if it has. :) In that cas…
... sort of graphical representation of memory and see where the game ... ] that the program is reading data from 25000 to 25500, writing ... data at 32768 to 36000 and ... pixel is equal to one memory address.
It would make ... -
MemoryI am writing a game for the Spectrum and need to store a lot of map data. What is the lowest address I can start to store the data at ?
I am writing a game for the Spectrum and need to store a lot of map data. What is the lowest address I can start to store the data at ? -
Longest Speccy Game?Most games were a memory test, 3 lives and back to the start if you failed. Longevity came from repeating the whole thing until you got bored complet…
Most games were a memory test, 3 lives and back ... passwords were rarely used.
Poke a game with infinite lives ... -
Bomb Jack poke questionOn the tipshop it gives a poke by Gerard Sweeney which allows you to choose how many lives you start with. It says "Lives=x" and says "Change x to wh…
... the tipshop it gives a poke by Gerard Sweeney which allows ... value you wish, using the POKE option on the ZXAM GUI ... not defined in the multiface poke that follows (49530,0). If ... -
Emulator Dev: Memory Use When Loading RZXsHi, I am currently working on a port of an emulator to a system with limited memory (64mb). I am running out of memory when loading large snapshots …
... to a system with limited memory (64mb). I am running out ... of memory when loading large snapshots (ie ... let me know how much memory is needed to decompress a ... -
ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…
... br /> Multifunctional Watches - watch memory addresses, variables, expressions, sysvars< ... be returned to.
Memory Map which shows the ... , instead of POKEs and DATA statements
Renumber tool ... function
LOAD CODE/DATA/SCREEN$ etc all functional.
ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…
... br /> Multifunctional Watches - watch memory addresses, variables, expressions, sysvars< ... be returned to.
Memory Map which shows the ... , instead of POKEs and DATA statements
Renumber tool ... function
LOAD CODE/DATA/SCREEN$ etc all functional.
Push/Pop methodMachine code question: Could somebody explain, how do we use the stack in assembler to copy data from one place of memory to another? I've heard it i…
Machine code question:
Could somebody explain, how do we use the stack in assembler to copy data from one place of memory to another?
I've heard it is one of quickest methods, faster then e.g using ldir or writing a loop.
Is it true?screen$I'm wanting to create a game which is written mostly is Basic, due to lack of MC skills but i need a MC routine if someone would kindly supply it I…
... want to store these in memory
eg screen 1 at ... a routine to move this data from it's address to ... pressing a key as the data was moved
if ...Verification of data from MakeTZX (FAO Steve specifically)Hi all, I've TZX'd up a tape of files which just use the Spectrum ROM loader (Steve, FYI it's the XLR-8 mastering utilites we were talking about on …
... verifying the ingetrity of the data in the TZX's? Would ...
